==================================================================== CERT-Renater Note d'Information No. 2016/VULN163 _____________________________________________________________________ DATE : 13/04/2016 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Systems running Microsoft Office versions 2007, 2010, 2013, 2013 RT, 2016, for Mac 2011, 2016 for Mac, Microsoft Office Compatibility Pack, Microsoft Excel Viewer, Microsoft Word Viewer, Microsoft SharePoint Server version 2007, 2010, 2013, Microsoft Office Web Apps version 2010, 2013. ====================================================================== KB3148775 https://technet.microsoft.com/en-us/library/security/MS16-042 _____________________________________________________________________ Microsoft Security Bulletin MS16-042 - Security Update for Microsoft Office -Critical (3148775) Document Metadata Bulletin Number: MS16-042 Bulletin Title: Security Update for Microsoft Office Severity: Critical KB Article: 3148775 Version: 1.0 Published Date: April 12, 2016 Executive Summary This security update resolves vulnerabilities in Microsoft Office. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted Microsoft Office file. An attacker who successfully exploited the vulnerabilities could run arbitrary code in the context of the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights. Affected Software Microsoft Office 2007 Microsoft Office 2010 Microsoft Office 2013 Microsoft Office 2013 RT Microsoft Office 2016 Microsoft Office for Mac 2011 Microsoft Office 2016 for Mac Microsoft Office Compatibility Pack Service Pack 3 Microsoft Excel Viewer Microsoft Word Viewer Microsoft SharePoint Server 2007 Microsoft SharePoint Server 2010 Microsoft SharePoint Server 2013 Microsoft Office Web Apps 2010 Microsoft Office Web Apps 2013 Vulnerability Information Multiple Microsoft Office Memory Corruption Vulnerabilities Multiple remote code execution vulnerabilities exist in Microsoft Office software when the Office software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerabilities could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. Exploitation of the vulnerabilities requires that a user open a specially crafted file with an affected version of Microsoft Office software. Note that where the severity is indicated as Critical in the Affected Software and Vulnerability Severity Ratings table, the Preview Pane is an attack vector for CVE-2016-0127. In an email attack scenario an attacker could exploit the vulnerabilities by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file that is designed to exploit the vulnerabilities. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or Instant Messenger message, and then convince them to open the specially crafted file. The security update addresses the vulnerabilities by correcting how Office handles objects in memory. The following tables contain links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list: Vulnerability title CVE number Publicly disclosed Exploited Microsoft Office Memory Corruption Vulnerability CVE-2016-0122 No No Microsoft Office Memory Corruption Vulnerability CVE-2016-0127 No No Microsoft Office Memory Corruption Vulnerability CVE-2016-0136 No No Microsoft Office Memory Corruption Vulnerability CVE-2016-0139 No No ========================================================== Serveur de référence du CERT-Renater https://services.renater.fr/ssi/ ========================================================== + CERT-RENATER | tel : 01-53-94-20-44 + + 23 - 25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email: cert@support.renater.fr + ==========================================================